PDB Statistics: PDB Data Distribution by Molecular Weight (Entity)

Molecular weight is calculated for each chemically distinct component of a PDB structure, e.g. protein, nucleic acid.

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Molecular Weight (Daltons)Number of Entities
< 5K35,523
5K - 10K36,717
10K - 15K59,247
15K - 20K45,379
20K - 25K45,184
25K - 30K36,715
30K - 35K26,609
35K - 40K23,263
40K - 45K17,557
45K - 50K12,963
50K - 55K10,313
55K - 60K7,590
60K - 65K5,419
65K - 70K3,807
70K - 75K2,680
>= 75K20,580